When the Sahara was green...

[RodISHI]

Things like that amaze me, moutains were once the bottom of seas, deserts were once grasslands and so on.

Me too. This was once an ocean bed. That was the green algea in that one spot on the floor of the pit. Yet within 30 ft of that is a spot we never did rech the bottom on. It was fun work watching what would come up everyday.